Dead bolt and latch door lock

ABSTRACT

Disclosed is a combination door lock case which includes a latch member and a dead bolt both of which can be selectively projected into a striker plate mounted on a doorjamb. Latch bars extending from doorknobs positioned on each side of the case independently engage individual actuator members within the case, and rotate them about a main axis. Through cam and lever connections, the rotating actuators move the latch member from a temporary latching position, with the latch member projected into the striker plate, to a temporary unlatching position, with the latch member withdrawn into the door. Also in the case is a crank arm which is engageable by a spindle member causing the crank arm to rotate about the main axis as the spindle member is rotated. The end of the crank arm actuates the dead bolt to move it from an extended locking position to a retracted unlocking position with the dead bolt bodily contained within the door. The spindle is attached at one end to a thumb turn member positioned within one of the doorknobs and through a lost motion connector at the other end, the spindle can be actuated by a key cylinder positioned in the other doorknob. Provisions are made for preventing the actuation of the spindle by a picking tool inserted through the keyway of the lock cylinder.

United States Patent [72] Inventor Kiyoyasu Wake Tokyo,Japan 211 AppLNo.794,875

[22] Filed Jan. 29, 1969 [45] Patented Sept. 14, 1971 TujisashIndustries, Ltd.

Kanagawa, Japan a part interest [73] Assignee [S4] DEAD BOLT AND LATCHDOOR LOCK 27 Claims, 14 Drawing Figs.

52 use 70/107, 70/146,70/223,70/419,292/161,}92/3365 151 1111.01 E05135/04, E05b 59/02, E05b 3/08, E05c 1/12 50 FieldofSearch 70/107,

Primary ExaminerMarvin A. Champion Assistant Examiner -Edward J.McCarthy Attorney-Christensen & Sanborn ABSTRACT: Disclosed is acombination door lock case which includes a latch member and a dead boltboth of which can be selectively projected into a striker plate mountedon a doorjamb. Latch bars extending from doorknobs positioned on eachside of the case independently engage individual actuator members withinthe case, and rotate them about a main axis. Through cam and leverconnections, the rotating actuators move the latch member from atemporary latching position, with the latch member projected into thestriker plate, to a temporary unlatching position, with the latch memberwithdrawn into the door. Also in the case is a crank arm which isengageable by a spindle member causing the crank arm to rotate about themain axis as the spindle member is rotated. The end of the crank armactuates the dead bolt to move it from an extended locking position to aretracted unlocking position with the dead bolt bodily contained withinthe door. The spindle is attached at one end to a thumb turn memberpositioned within one of the doorknobs and through a lost motionconnector at the other end, the spindle can be actuated by a keycylinder positioned in the other doorknob. Provisions are made forpreventing the actuation of the spindle by a picking tool insertedthrough the keyway of the lock cylinder.

PATENIED SEP] 4 m1 SHEET 2 BF 3 PATENTED SEP] 4 |97l SHEET 3 [IF 3 DEADBOLT AND LATCH DOOR LOCK BACKGROUND OF THE INVENTION 1. Field of theInvention This invention relates to door locks and more particularly toimprovements to door locks permitting the location of both latch anddead bolt controlling elements in the doorknobs.

2. Description of the Prior Art Several characteristics of door lockhardware are considered by the prospective hardware customer and some ofthese include appearance, convenience, security, reliability, and cost.In recent years, at least in the United States, it has been commonpractice for those in the building trades to use door lock hardwarewhich presents a clean, uncluttered appearance, is convenient inoperation, and relatively inexpensive.

A typical example of this type of door lock hardware is referred to asthe key in knob pushbutton lock. This particular lock, as used for outerdoors, includes a key lock cylinder positioned centrally of the outsideknob with no other hardware element positioned on the exterior of thedoor. A button or thumb turn member is generally located in the centerof the inside knob but some styles have the button positioned in therose member forming the baseplate of the knob. This lock has only onelocking element in the form of a latch member which is projectable fromthe edge of the door into the opening of a striker plate located on thedoorjamb. The latch member, when the lock is in its unlocked condition,can be cycled by turning either the inside'or outside doorknob. To lockthe door, the button or thumb turn on the inside knob is operated toprevent the rotation of the exterior knob thereby preventing the cyclingof the latch member by anyone on the outside of the door.

The latch member itself is spring biased to the projected latchingposition but can be easily blocked by means of a thin member, such as aplastic or metal sheet inserted between the edge of the door and thestriker plate causing the latch member to become retracted into the dooredge. Thus it is seen that this type of lock is not very secure sincethere is no provision of a dead bolt for positive locking, yet this typeof lock is commercially very popular because of its convenience inoperation.

If the user is leaving the house, he merely pushes the button or turnsthe thumb turn, closes the door behind him and it is locked. It is notnecessary for him to get out hiskey and project the latch member byinserting his key into the locking cylinder and rotating the lockingmechanism. When he desires to unlock the door, if he is inside thehouse, he merely turns the inside knob to release the pushbutton or toturn the thumb turn thereby retracting the latch member. If he is on theoutside of the house, he inserts his key into the cylinder, turns thecylinder which releases the pushbutton or rotates the thumb turnpermitting the rotation of the outside knob for retracting the latchmember. Another disadvantage beyond the lack of good security of the keyin knob pushbutton lock is the fact that oftentimes the user is lockedout of the house by failing to bring the key with him.

OBJECTS AND SUMMARY OF THE INVENTION It is the principal object of theinstant invention to provide a generally improved door lock apparatuswhich provides the locking security of a dead bolt lock with most of theconveniences of the key in knob pushbutton lock and all of thegoodappearance features of such locks.

Another object of the instant invention is to provide a generallyimproved latch operating mechanism for door locks which permits thecycling of the latch member by the rotation of either of the doorknobsindependently of one another, such that the doorknob operating the latchcan be rotated without rotating the doorknob on the other side of thedoor.

It is a further object of the instant invention to provide a generallyimproved combination latch and dead bolt lock wherein the actuatingmembers projecting-inwardly from the doorknobs rotate about a singleaxis while operating either the dead bolt or latch actuation mechanisms.

It is an additional object of the instant invention to provide a deadbolt actuation system which includes elements for prevention of theoperation of the dead bolt by means of an unauthorized picking tool;first, by the use of means which prevent the rotation of such a tooland, second, by means which cause the disengagement of operatingcomponents when an unauthorized probing tool is used.

A related object of the instant invention is to provide a generallyimproved combination latch and dead bolt door lock having all of theexterior operating components thereof located in the knobs forpresenting a clean, pleasing appearance.

In accordance with the present invention, a lock case is installedwithin the edge of the door and includes within it a retractable latchmember, latch-operating mechanism, retractable dead bolt and a mechanismfor retracting and projecting the dead bolt. Doorknobs may be located oneither or both sides of the door and include control elements projectinginto the case for actuating the latch member and dead bolt operatingmechanisms.

The latch member is spring biased to a projected position such that itnormally projects out from the edge of the door but may be easilyretracted into the case as the beveled edge of the latch member strikesthe edge of the striking plate when the door is pushed closed. Once thedoor is in its closed position, the biasing spring on the latch projectsthe latch member into an opening formed in the striking plate.

In addition, the latch member may be withdrawn into the door edge bymeans of a bellcrank lever and cam actuator mechanism positioned withinthe lock case. The bellcrank lever is attached at one end to an innerend of the latch member and the other end to the apex portion of aV-shaped connector member which has the ends of its legs engaged by camsurfaces formed in latch actuator cam plates which are supported forindependent rotation about the main axis of the lock case. As either ofthe actuator plates is rotated about the main axis in either direction,the V-shaped connector is cammed to move away from the axis resulting inthe pivoting of the bellcrank lever and the retraction of the latchmember. Actuation slots are formed in the latch actuator cam plates forinsertion therein of latch bars extending from the doorknobs into thelock case. As either doorknob is rotated its latch bars rotate throughtheir engagement with the ends of the actuation slots, thereby cyclingthe V-shaped connector, bellcrank lever and latch member components. Toprovide independent operation between the doorknobs, the latch bars fromone doorknob do not extend to join with the latch bars from the otherdoorknob and two individual latch actuator cam plates are spaced alongthe main axis so that the rotation of either of them independentlycauses the movement of the V-shaped connector member.

Positioned within the space between the two latch actuator cam plates isa bolt crank member which is supported for rotation by means of aspindle extending along the main axis of the case. The outer end of thecrank engages a portion of the dead bolt to thereby project the boltoutwardly from the case or retract the bolt inwardly into the door edge,depending upon the direction of rotation of the spindle. A thumb turnmember is positioned in one of the doorknobs and includes a means forengaging the spindle so that as the thumb turn member is rotated, so,too, are the spindle and bolt crank.

At the other end of the spindle, a lost motion connector permits the endof the key, projected into the keyway of a cylinder lock located in theother knob, to rotate the spindle when the key has been rotated morethan The connector between the end of the key and the end of the spindleis spring biased so that it can become disengaged if a probing toolurges the connector toward the locking case. An additional projection isprovided at the end of the locking cylinder to prevent the rotation of apicking tool having the form of the inner end of the key. When theproper key has unlocked the cylinder permitting its rotation relative tothe outer cylinder, the projection rotates with the key.

These and other features and advantages of the invention will becomemore clearly apparent from the following detailed description thereofwhich is to be read with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side elevation view of adoor edge with some parts broken away and others in section toillustrate the components of the improved combination latch and deadbolt door lock made in accordance with the present invention;

FIG. 2 is a side elevation view of the lock case illustrating theposition of the improved latch and dead bolt operating mechanisms madein accordance with the present invention;

FIG. 3 is a side elevation view of a portion of the lock case with someparts removed for clarity to illustrate the dead bolt operatingmechanism with the dead bolt retracted bodily within the door edge;

FIG. 4 is a view similar to FIG. 3 but illustrating the projectedposition of the dead bolt;

FIG. 5 is a side elevation view of the locking case, with some partsremoved for clarity, illustrating the normal condition of the latchmechanism with the latch member it its projected position;

FIG. 6 is a view similar to FIG. 5 showing the position of thelatch-operating mechanism when the knob has been turned in the directionof the arrow A to withdraw the latch member into the door edge;

FIG. 7 is a view similar to FIG. 6 showing the location of the latch barmechanism when the knob has been rotated in the direction 8;,

FIG. 8 is an exploded isometric view of the key lock end of the deadbolt actuation components made in accordance with the present invention;

FIG. 9 is a side section view on an enlarged scale of the connectorelement shown in FIG. 8 illustrating the position of the tip of the keywith relation to other components of the connector made in accordancewith the present invention;

FIG. 10 is a view similar to FIG. 9 but illustrating the disengagementof connector components resulting from the use of a picking tool; and

FIGS. 11 to 14 are section views of the key engagement portion of theconnector, as seen from lines 11l1 of FIG. 9, il- Iustrating thesequence of positions for these components.

DESCRIPTION OF THE PREFERRED EMBODIMENTS With general reference to FIGS.1 and 2, the edge of door 39 is shown fitted with a generally improvedcombination latch and dead bolt lock 60 made in accordance with thepresent invention. As shown, lock 60 includes a locking case 9positioned within door 39 and operated by an outside doorknob l,referred to as a key knob, and inside doorknob 2. For ease ofmanufacturing, installing and repair part storing, many of thecomponents housed within lock case 9 can be used with a variety ofinside and outside fittings.

The example shown indicates the typical outside door with key knob lpositioned on the outside and a keyless knob 2, having a bolt-actuatingthumb turn 6, fitted on the inside of the door 39. Other possibilitiesinclude the use of a blank member on one side of the door with a keyknob, thumb turn keyless knob, or a plain keyless knob fitted on theother side. In addition, a key knob could be places on one side of thedoor and a plain keyless knob fitted on the other side. If desired, akey knob could be installed on both sides of the door, or a key knobcould be placed on one side and a plain keyless knob placed on the otherside. The desired combination is usually dependent upon the use to whichthe door is to be put.

Before going into specific details of the operating.

mechanism of the lock 60, its general arrangement becomes apparent froman inspection of FIGS. 1 and 2. Key knob l is positioned on the outsideof the door 39 and inside knob 2 is positioned on the inside of door 39.Escutcheon plates 3 and 4, commonly referred to as rose members, spanthe distance between the inner portions of the knobs 1 and 2 and theouter faces of door 39. Edge plate 8 serves to locate and support lockcase housing 9 in the edge of door 39. Projecting out from the lock casehousing 9, through apertures formed in its edge and in edge plate 8, aredead bolt 10 and latch member 11. When door 39 is closed, edge plate 8is positioned opposite to strike plate 40 positioned in the edge ofdoorjamb 41. Strike plate 40 provides openings 42 for insertiontherethrough of dead bolt 10 and latch member 11 tothereby couple door39 to doorjamb 41.

The Dead Bolt Mechanism With specific reference to FIGS. 3 and 4, it isnoted that dead bolt 10 is movable through the aperture formed in edgeplate8 from a retracted position as shown in FIG. 3 to an extendedlocking position as shown in FIG. 4. To accomplish this movement, boltspindle 25, which extends with its axis coincident with the main axis 37of the lock 60, is rotated about main axis 37. Bolt crank 15 issupported by and rotates with bolt spindle 25 from a retracted positionas shown in FIG. 3 to an extended position as shown in FIG. 4. Boltcrank end lug 31, positioned on the outer end of bolt crank 15, isengaged by bolt spring 35 as it is supported by spring retainer 34 whichextends outwardly from bolt body 32. The bolt notch 33 into which endlug 31 is inserted is formed in the innermost end of bolt body 32. Thus,the rotational movement of bolt spindle 25 causes a swinging movement ofbolt crank 15 resulting in a linear movement of dead bolt 10 to anextended position from a retracted position and from an extendedposition to a retracted position. The details of the mechanism forrotating bolt spindle 25 will be discussed later with reference to FIGS.8 to 14. Latch-Operating Mechanism With reference to FIGS. 5 through 7,it is noted that latch member 11 is cycled from a latching positionextending through an aperture in edge plate 8, as shown in FIG. 5, to aretracted position bodily contained within the edge of door 39, as shownin FIGS. 6 and 7. As shown in FIG. I, latch bars 14 extend into lockcase housing 9 from key knob 1 and inside knob 2. Specifically, latchbars and 14b extend inwardly from key knob 1 into recesses formed inlatch cam plate which is rotatably supported by shaft 9a for pivotalmovement about main axis 37. In a similar manner, top latch bar 140 andbottom latch bar 14d extend inwardly from inside knob 2 into recessesformed inlatch cam plate 16b which is similarly pivotally mounted uponhousing shaft 9a for movement about main axis 37. With this arrangementthe rotation of key knob 1 causes the rotation of latch cam plate 161:because of the transfer of torque from knob 1 through top latch bar 14aand bottom latch bar 14b to latch cam plate 161:. Similarly, therotation of inside knob 2 about main axis 37 causes the rotation oflatch cam plate 1612 due to the torque transferred through top latch bar140 and bottom latch bar 14d. It should be noted that the latch bars 14do not extend completely through lock case housing 9 thereby providingindependent rotation of latch cam plates 16a and 16b through theindependent rotation of knobs 1 and 2.

Cam surfaces formed in each end of projections of latch cam plates 16aand 16b are engaged by the leg ends 17 of V- shaped latch connectorplate 18. At the apex of connector plate 18, an apex joint 19 is formedwith one end of latch bellcrank lever 20 which pivots about lever pivot21. The other end of latch bellcrank lever 20 forms a lever tip 22 whichengages the ends of an aperture formed in latch housing 12 to retractlatch member 11 inwardly, into lock case housing 9 as lever 20 isrotated in a clockwise direction, as seen in FIGS. 5 through 7, aboutpivot 21. Lever spring 23, acting between the housing 9 and bellcrank20, biases bellcrank lever 20 in a counterclockwise position such thatwhen no rotational force is applied to bellcrank lever 20 through latchconnector plate l8, latch member 11 is urged into a projecting position.Latch member 11 is manually pushed into its retracted position as itstrikes the edge of strike plate 40 acting against the biasing force oflatch spring 13 which will restore latch member 11 to its extendedposition when the manual force or contact with strike plate 40 has beendiscontinued. It should be noted that the manual holding of key knob 1to prevent its rotation will not affect the operation of latch member 11since latch bars 14a and 14b are not connected to latch bars 140 and 14dof knob 2 and since the latch mechanism is independently movable by theprovision of two independent latch cam plates 16a and 161;. Further, itshould also be noted that when one of the knobs, 1 or 2, is rotatedthere is no interconnection with the other knob which will cause itsrotation.

Pick-Proof Bolt Spindle Mechanism As shown in FIG. I, the connectionbetween thumb turn 6, mounted centrally, of inside knob 2, with boltspindle 25 is rather straightforward as it is provided by meansof aconnection through thumb turn shaft 30 extending from the inner end ofthumb turn 6 to overlap with one end of bolt spindle 25. The connectionbetween shaft 30 and bolt spindle 25 is of the type which permits axialrelative movement between shaft 30 and bolt spindle 25 along main axis37 but fixed relative move ment between thumb turn 6 and bolt spindle 25around main axis 37. Thus as the user rotates thumb turn 6 he alsodirectly rotates bolt spindle 25 and bolt crank resulting in theactuation of dead bolt 10.

Since the unauthorized operation of the other end of bolt spindle is ofprincipal concern, attention isdirected to a more detailed showing ofthis structure in FIGS. 8 to 14. In the normal manner key 5 is insertedinto the keyway 43 formed within cylinder barrel 44 which is housed byand relatively locked in position with outer lock cylinder 7. When theproper key 5 is inserted into keyway 43, the unlocking relationship withalignment of lock pins 27 is established permitting rotation of cylinderbarrel 44 about main axis 37 relative to outer cylinder 7. Since outercylinder 7 is firmly attached to key knob l, the unlocking relationshipbetween barrel 44 and cylinder 7 permits rotation of barrel 44 relativeto key knob I. Extending inwardly fromcylinder barrel 44 on either sideof a continuation of keyway 43 are positioned rotation barrier elements46 to prevent the rotation of a picking tool which might be elongatedand narrow along the length of keyway 43 but have a tip formed similarto the end tip of key 5. Unless the proper unlocking relationship oflock pins 27 is established, no rotation of cylinder barrel 44 orrotational barrier elements 46 relative to lock outer cylinder 7 ispermitted.

As best shown in FIG. 9, the tip end of key 5 is inserted into a lostmotion sleeve 26 which has an axis coincident with main axis and isrotatable about main axis 37. Sleeve key opening 28 is formed at one endof sleeve 26 and provides sleeve abutment members 48 which come intocontact with the edges of key 5 when there is a relative rotation ofmore than 90 about axis 37 between sleeve 26 and key 5. AT the inner endsleeve 26 there are formed sleeve lugs 49 which extend toward axis 37and upon rotation of bolt spindle 25 or sleeve 26 engage fingers 52which extend parallel to axis 37 from the periphery I of bolt spindleend flange 51. Spindle end flange 51 is secured to bolt spindle 25 suchthat as bolt spindle 25 rotates, so too does flange 51. Bolt spindle25'extends inwardly from spindle end flange 51 toward bolt crank I5.Intermediate of flange 51 and bolt crank 15, bolt spindle 25 passesthrough an aperture formed in spindle support plate 54 which is secured,as shown in FIG. 1, to outside rose member 3. The connection betweenspindle support plate 54 and bolt spindle 25 is such that rotationalmovement of spindle 25 about main axis 37 is not inhibited by supportplate 54, but axial movement of spindle 25 along axis 37 is prevented bythe connection between spindle 25 and spindle support plate 54.

To prevent a picking tool projected through keyway 43 from causingrotation of spindle 25, a picking shield 45 is positioned within lostmotion sleeve 26 and sleeve spring 28 is biased between picking shield45 and end flange 5 I of spindle 25. As shownin FIG. 10, when the tip ofa picking tool 55 causes an axial force parallel to main axis 37, as itengages sleeve 26 or picking shield 45, the biasing force of sleevespring 29 is easily overcome causing the disengagement between sleevelugs 49 and fingers 52 of spindle end flange 51. This disengagementpermits rotation of sleeve 26 relative to bolt spindle 25 therebyisolating sleeve'26 from any bolt action. This disconnection frustratesthe purpose of the picking tool 55. In summary, a picking tool, which isformed to conform to with the tip of key 5 yet having a narrow bodywhich is not prevented from rotation by the structural constriction ofkeyway 43, is prevented from rotation by rotation barrier elements 46.The disconnection of sleeve 26 from bolt spindle 25 by means of thestructural relationship between lugs 49 of lost motion sleeve 26 andfingers 52 of spindle end flange 51 prevents unauthorized rotation ofspindle 25 by a picking tool applying an axial and then rotational forceagainst sleeve 26.

FIGS. ll'to 14 illustrate the sequence of rotation of bolt spindle 25.As shown in FIGS. 11 and 13, when thumb turn 6 is rotated 90 about axis37 a similar movement is produced for bolt spindle 25, bolt crank 15 andsleeve 26, thereby moving dead bolt 10 from its retracted position shownin FIG. 3 to its extended locking position shown in FIGS. 2 and 4. Uponthe reverse rotation of thumb turn 5 of 90 about axis 37, a similarmovement, produced for bolt spindle 25, bolt crank 15 and sleeve 26,results in the movement of dead bolt 10 from its locking position to itsretracted position bodily within door 39. Without key being positionedin keyway 43 the rotation of thumb turn 6 is independent of cylinderbarrel 44 since there is direct connection between barrel 44 and sleeve26.

Upon the positioning of the proper key 5 within keyway 43, contactbetween key 5 and lock pins 27 establishes an unlocking relationshipbetween cylinder barrel 44 and lock cylinder 24 permitting rotation ofcylinder barrel 44 about main axis 37 relative to outer cylinder 7. Key5 may be inserted into keyway 43 or removed from keyway only when theplanes of key 5 and keyway 43 are aligned with key insertion and removalplane 57.

As key 5 is rotated through the first 90 from the position shown in FIG.11 to that shown in FIG. 12 nothing happens to bolt spindle 25 becausethere is no engagement between any of the surfaces A to D of sleeveabutment members 48 and any of the tip surfaces E to H of key 5.Continued rotation of key 5, however, from the 90 position shown in FIG.12 to the I position shown in FIG. 12, causes sleeve 26, spindle endflange 51, bolt spindle 25, bolt crank 15 and thumb turn 6 to rotate assurfaces D and B of sleeve abutment members 48 are engaged and rotatedby trip surfaces E and G, respectively, of key 5. This rotation causesdead bolt 10 to be projected to the locking position shown in FIGS. 2and 4. Key 5 can be removed from barrel 44 because of the parallelalignment between key 5 and keyway 43 with key insertion and removalplane 57, as shown in FIG. 13.

Regardless of how sleeve 26 was moved to the locking position shown inFIG. 13, either by manual rotation of thumb turn 6 or by rotation of key5, it is restored to the unlocked position of FIG. 11 by rotation in thereverse direction. To accomplish this rotation thumb turn 6 may bemerely rotated 90 in the direction of the arrow shown in FIG. 14 or key5 is again inserted into keyway 43 and rotated in the direction of thearrow shown in FIG. 14. The first 90 of rotation of key 5 changes itsposition from that shown in FIG. 13 to that shown in FIG. 14 withoutrotation of sleeve 26 due tothe lost motion spacing between surfaces 8and C and D and A of abutment members 48. Continued rotation of key 5from its position shown in FIG. 14 to that shown in FIG. 11 causes a 90rotation of sleeve 26, end flange 5], bolt spindle 25, bolt crank 15 andthumb turn 6 due to the engagement between key tip surfaces F and H withsleeve abutment surfaces A and C, respectively, until dead bolt 10 isretracted into door 39 in the un- What is claimed is:

1. in a lock apparatus, the improvement comprising:

spindle means extending along a main axis and rotatably supported forrotation about said axis;

said spindle means including finger means for receiving torque forcesapplied to said spindle;

connector means including a sleeve member positioned adjacent saidfinger means and having lug members selectively engageable with saidfinger means for applying-a torque to said spindle as said sleeve memberis rotated about said axis;

said connector means also including biasing means normally biasing saidconnector means into engagement position with said lug means disposedfor engagement with said finger means as said sleeve member is rotatedabout said axis with said biasing means being easily overcome by a forceapplied against said sleeve member in an axial direction tending to movesaid sleeve along said spindle to a disengagement position with saidfinger and lug means relatively disposed such that rotation of saidsleeve is independent of said spindle,

and

said sleeve member also including abutment means having abutmentsurfaces, extending radially inwardly from the end of said sleeve memberopposite to the end supporting said lug means, for receiving torqueforces applied to said sleeve member.

2. The lock apparatus of claim 1, including:

locking barrel and cylinder means disposed with the keyway of saidbarrel and the axis of said cylinder coincident with said main axis; and

proper key means, upon insertion into said keyway, permitting rotationof said key, keyway and barrel relative to said cylinder about said mainaxis with the tip end of said key means having surfaces disposed forengagement with said sleeve abutment surfaces for applying a torque tosaid sleeve member and spindle as said key means is rotated about saidaxis. r

' 3. The lock apparatus of claim 2, wherein:

said locking barrel includes rotation barrier means projecting into saidsleeve member as a continuation of said keyway beyond said cylinder forpreventing rotation of a picking tool inserted through said keyway to aposition adjacent said abutment surfaces of said sleeve member.

4. In a lock apparatus, the improvement comprising:

a lock case including an edge plate, adapted to be positioned in thesideedge of a door for housing locking elements selectively projectedthrough apertures provided in said edge plate;

latch mechanism supported within said lock case and including a latchingmember, projectable through said edge plate aperture, a latch housingfor supporting said latch member, a latch bell crank lever forselectively projecting and retracting said latch member, a V-shapedlatch connector plate for rotating said lever, and latch cam plate meansfor actuating said connector plate;

said latch member supported by said latch housing and movable between anextended position whereat a portion thereof projects out from said dooredge through said edge plate aperture and a retracted position whereatsaid latch member is contained bodily within said door edge;

said lever is pivotally mounted within said case and operativelyconnected to said latch housing at one end and to the apex of saidconnector plate at its other end for moving said latch member to saidextended position when said lever is in a first position and to saidretracted position when said connector and lever are in a secondposition;

said latch cam plate means pivotally mounted within said case forrotating about a main axis and including latchbar-engaging surfaces forreceiving torque in either direction about said main axis;

said latch cam plate means also including cam surfaces selectivelyengageable with leg ends of said connector plate for converting torqueapplied to said cam plate to movement of said connector plate and leverto said second position.

5. The lock apparatus of claim 4, wherein said latchmechanism alsoincludes a biasing means for biasing said lever and connector to saidfirst position.

6. The lock apparatus of claim 4, wherein:

said latch cam means includes two plate members of substantiallyidentical configuration spaced from one another along said main axis forindependent rotation thereabout with said connector legs selectivelyengaged by either of said cam plate members; 7 v

said latch-bar-engaging surfaces of said cam plate members beingengageable by bar means inserted into opposite sides of said lock casefor applying torque ,to one or the other of cam plate members.

7. The lock apparatus of claim 4, including:

a dead bolt mechanism also supported within said lock case includinga'bolt spindle extending through said case and along said main axis fortransferring torque to said dead bolt mechanism, a dead bolt slidablymounted within said case and movable through one of said edge plateapertures between an extended position whereat a portion thereofprojects out from said door edge and a retracted position whereat saiddead bolt is contained bodily within said door edge, and a bolt crankmeans supported by said spindle with one end thereof engaging said deadbolt for moving said dead bolt toward said extended position when torqueis applied to said bolt spindle in a first direction and for moving saiddead bolt toward said retracted position when torque is applied to saidbolt spindle in a second direction opposite to said first direction.

8. The lock apparatus of claim 6, including:

a dead bolt mechanism also supported within said lock case including abolt spindle extending through said case and along said main axis fortransferring torque to said dead bolt mechanism, a dead bolt slidablymounted within said case and movable through one of said edge plateapertures between an extended position, whereat a portion thereofprojects out from said door edge and a retracted position whereat saiddead bolt is contained bodily within said door edge, and a bolt crankmeans supported by said spindle between said cam plate members with oneend thereof engaging said dead bolt for moving it toward said extendedposition when torque is applied to said bolt spindle in a firstdirection and for moving said dead bolt toward said retracted positionwhen torque is applied to said bolt spindle in a second directionopposite to said first direction.

9. in a combination latch and dead bolt lock mechanism, a pair ofmutually opposing, coaxially disposed knob spindles, one of which has akey-operated cylinder lock which is relatively fixedly located therein,on the rotational axis of the spindles, a manually operated bolt spindlemechanism which is independently rotatably mounted on the rotationalaxis of the spindles, means operatively interconnecting the individualknob spindles with the latch for reciprocation of the latch, and meansoperatively interconnecting the bolt spindle mechanism with the deadbolt for reciprocation of the dead bolt, the cylinder lock and the boltspindle mechanism having mutually opposing end openings therein forprojection of the leading end portion of the key of the cylinder lockinto the bolt spindle mechanism from the cylinder lock, and there beinglug means in the opening of the bolt spindle mechanism which areinterengageable with the key when the cylinder lock is unlocked by thekey, so that rotation of the key in the cylinder lock imparts torque tothe bolt spindle mechanism to operate the dead bolt.

10. The combination latch and dead bolt lock mechanism according toclaim 9 wherein the other knob spindle has an exteriorly accessiblethumb turn which is independently rotatably mounted therein, on therotational axis of the spindles, and interconnected with the boltspindle mechanism to manually operate the same.

11. The combination latch and dead bolt lock mechanism according toclaim 9 wherein the bolt spindle mechanism includes a sleeve adjacentthe cylinder lock, which has lugs thereon that project radially inwardlyof the bore of the sleeve to engage abutments on the key of the cylinderlock.

12. The combination latch and dead bolt lock mechanism according toclaim 11 wherein the bolt spindle mechanism also includes a bolt spindlewhich is longitudinally coaxially disposed with the sleeve, the boltspindle and sleeve being relatively axially shiftable and yieldablybiased to assume a normally operative position along the rotational axisof the knob spindles, and there being lug means on the bolt spindle andsleeve which interengage with one another in the normally operativeposition thereof, so that the bolt spindle undergoes rotation inconjunction with the sleeve when torque is applied to the sleeve, butwhich disengage from one another when the bolt spindle and sleeve areshifted in relation to one another against the bias thereon, relativelyaxially away from the normally operative position thereof, so that thetorque applied to the sleeve is not transmitted to the bolt spindle.

13. The combination latch and dead bolt lock mechanism according toclaim 12 wherein the sleeve has a pick shield across the bore thereof,opposite the adjacent end of the bolt spindle.

14. The combination latch and dead bolt lock mechanism according toclaim 9 wherein there is a pair of barrier elements relatively rotatablyinserted into the opening of the bolt spindle mechanism, from thecylinder lock, to either side of the keyway of the cylinder lock, toprevent rotation of the bolt spindle mechanism by other than the key.

15. The combination latch and dead bolt lock mechanism according toclaim 9 wherein the latch and dead bolt are housed in, and separatelyprojectable from separate recesses spaced apart in the lock mechanism.

16. The combination latch and dead bolt lock mechanism according toclaim 9 wherein the latch is spring loaded to project from the lockmechanism, and the means for reciprocating the latch include a pivotallymounted lever which is operative to retract the latch against the biasthereon, and a V- shaped latch connector, the apex of which isinterconnected with the lever, and the legs of which are interconnectedwith the knob spindles and individually responsive to longitudinallyapplied end forces thereon to rotate the lever about the pivot thereof.

17. The combination latch and dead bolt lock mechanism according toclaim 16 wherein the knob spindles are rotatable independently from oneanother, and each knob spindle is separately interconnected with theV-shaped latch connector to apply longitudinal end forces to the sameindependently of the other knob spindle.

18. In a knob spindle for a combination latch and dead bolt lockmechanism, a pair of coaxially disposed and relatively axially shiftableoperating members for the dead bolt, which are independently rotatablymounted on the rotational axis of the knob spindle and yieldably biasedto assume a normally operative position along the axis thereof, therebeing lug means on the operating members which are interengaged with oneanother in the normally operative position thereof to cause the membersto undergo conjoint rotation when torque is applied to one of themembers, but disengaged from one another when the members are shifted inrelation to one another against the bias thereon, relatively axiallyaway from the normally operative position thereof, so that the torqueapplied to the one operating member is not transmitted to the otheroperating member.

19. The knob spindle according to claim 18 wherein the one operatingmember has a recess therein and a portion of the other operating memberis inserted in the recess, the lug means being interposed between theoperating members in the recess.

20. The knob spindle according to claim 19 wherein the one operatingmember has lugs thereon which project radially inwardly of the recessand engage abutments on the other operating member 21. The knob spindleaccording to claim 20 wherein the one operating member takes the form ofa sleeve, and the other operating member takes the form of a boltspindle, one end portion of which is inserted in the bore of the sleeve.

22. The knob spindle according to claim 21 wherein the sleeve has a pickshield across the bore thereof, opposite the one end of the boltspindle.

23. The knob spindle according to claim 22 wherein the one end of thebolt spindle has a flange thereon which in turn has axially extendingfingers thereon which form abutments for the lugs on the sleeve.

24. The knob spindle according to claim 23 wherein biasing means areinterposed between the pick shield and the flange on the bolt spindle.

25. The knob spindle according to claim 18 wherein there is akey-operated cylinder lock interposed in the spindle between the oneoperating member and the free end of the knob, the cylinder lock and oneoperating member having mutually opposing end openings therein forprojection of the leading end portion of the key of the cylinder lockinto the one operating member from the cylinder lock, and there beinglug means in the opening of the one operating member which areinterengageable with the key when the cylinder lock is unlocked by thekey, so that rotation of the key in the cylinder lock imparts torque tothe one operating member, and thus to the other operating member, foroperation of the dead bolt.

26. The knob spindle according to claim 25 wherein there is a pair ofbarrier elements rotatably inserted into the opening of the oneoperating member, from the cylinder lock, to either side of the keywayof the cylinder lock, to prevent rotation of the one operating member byother than the key.

27. In combination, a lock mechanism having separately projectable latchand dead bolt locks therein, and a knob spindle interconnected with thelock mechanism to operate the locks, including a pair of coaxiallydisposed and relatively axially shiftable operating members for the deadbolt, which are independently rotatably mounted on the rotational axisof the knob spindle and yieldably biased to assume a normally operativeposition along the axis thereof, there being lug means on the operatingmembers which are interengaged with one another in the normallyoperative position thereof to cause the members to undergo conjointrotation when torque is applied to one of the members, but disengagedfrom one another when the members are shifted in relation to one anotheragainst the bias thereon, relatively axially away from the normallyoperative position thereof, so that the torque applied to the oneoperating member is not transmitted to the other operating member.

IPO1O5O UNITED STATES PATENT OFFICE (569) CERTIFICATE OF CORRECTIONPatent No. 604 229 Dated pt 14, 1971 Inventofls KIYOYASU WAKE It iscertified that error appears in the above-identified patent and thatsaid Letters Patent are hereby corrected as shown below:

Please correct Assignee's name as follows:

From: "Tujisash Industries, Ltd.

T -Fujisash Industries, Ltdn Signed and sealed this 26th day of March1972.

(SEAL) Attest:

EDWARD MJLETQHER, JR. ROBERT GOTTSCHALK Attestlng Officer CommissionerofPatents

1. In a lock apparatus, the improvement comprising: spindle meansextending along a main axis and rotatably supported for rotation aboutsaid axis; said spindle means including finger means for receivingtorque forces applied to said spindle; connector means including asleeve member positioned adjacent said finger means and having lugmembers selectively engageable with said finger means for applying atorque to said spindle as said sleeve member is rotated about said axis;said connector means also including biasing means normally biasing saidconnector means into engagement position with said lug means disposedfor engagement with said finger means as said sleeve member is rotatedabout said axis with said biasing means being easily Overcome by a forceapplied against said sleeve member in an axial direction tending to movesaid sleeve along said spindle to a disengagement position with saidfinger and lug means relatively disposed such that rotation of saidsleeve is independent of said spindle, and said sleeve member alsoincluding abutment means having abutment surfaces, extending radiallyinwardly from the end of said sleeve member opposite to the endsupporting said lug means, for receiving torque forces applied to saidsleeve member.
 2. The lock apparatus of claim 1, including: lockingbarrel and cylinder means disposed with the keyway of said barrel andthe axis of said cylinder coincident with said main axis; and proper keymeans, upon insertion into said keyway, permitting rotation of said key,keyway and barrel relative to said cylinder about said main axis withthe tip end of said key means having surfaces disposed for engagementwith said sleeve abutment surfaces for applying a torque to said sleevemember and spindle as said key means is rotated about said axis.
 3. Thelock apparatus of claim 2, wherein: said locking barrel includesrotation barrier means projecting into said sleeve member as acontinuation of said keyway beyond said cylinder for preventing rotationof a picking tool inserted through said keyway to a position adjacentsaid abutment surfaces of said sleeve member.
 4. In a lock apparatus,the improvement comprising: a lock case including an edge plate, adaptedto be positioned in the side edge of a door for housing locking elementsselectively projected through apertures provided in said edge plate;latch mechanism supported within said lock case and including a latchingmember, projectable through said edge plate aperture, a latch housingfor supporting said latch member, a latch bell crank lever forselectively projecting and retracting said latch member, a V-shapedlatch connector plate for rotating said lever, and latch cam plate meansfor actuating said connector plate; said latch member supported by saidlatch housing and movable between an extended position whereat a portionthereof projects out from said door edge through said edge plateaperture and a retracted position whereat said latch member is containedbodily within said door edge; said lever is pivotally mounted withinsaid case and operatively connected to said latch housing at one end andto the apex of said connector plate at its other end for moving saidlatch member to said extended position when said lever is in a firstposition and to said retracted position when said connector and leverare in a second position; said latch cam plate means pivotally mountedwithin said case for rotating about a main axis and includinglatch-bar-engaging surfaces for receiving torque in either directionabout said main axis; said latch cam plate means also including camsurfaces selectively engageable with leg ends of said connector platefor converting torque applied to said cam plate to movement of saidconnector plate and lever to said second position.
 5. The lock apparatusof claim 4, wherein said latch mechanism also includes a biasing meansfor biasing said lever and connector to said first position.
 6. The lockapparatus of claim 4, wherein: said latch cam means includes two platemembers of substantially identical configuration spaced from one anotheralong said main axis for independent rotation thereabout with saidconnector legs selectively engaged by either of said cam plate members;said latch-bar-engaging surfaces of said cam plate members beingengageable by bar means inserted into opposite sides of said lock casefor applying torque to one or the other of cam plate members.
 7. Thelock apparatus of claim 4, including: a dead bolt mechanism alsosupported within said lock case including a bolt spindle extendingthrough said case and along said main axis for transferring torque tosaid dead bolt mechAnism, a dead bolt slidably mounted within said caseand movable through one of said edge plate apertures between an extendedposition whereat a portion thereof projects out from said door edge anda retracted position whereat said dead bolt is contained bodily withinsaid door edge, and a bolt crank means supported by said spindle withone end thereof engaging said dead bolt for moving said dead bolt towardsaid extended position when torque is applied to said bolt spindle in afirst direction and for moving said dead bolt toward said retractedposition when torque is applied to said bolt spindle in a seconddirection opposite to said first direction.
 8. The lock apparatus ofclaim 6, including: a dead bolt mechanism also supported within saidlock case including a bolt spindle extending through said case and alongsaid main axis for transferring torque to said dead bolt mechanism, adead bolt slidably mounted within said case and movable through one ofsaid edge plate apertures between an extended position, whereat aportion thereof projects out from said door edge and a retractedposition whereat said dead bolt is contained bodily within said dooredge, and a bolt crank means supported by said spindle between said camplate members with one end thereof engaging said dead bolt for moving ittoward said extended position when torque is applied to said boltspindle in a first direction and for moving said dead bolt toward saidretracted position when torque is applied to said bolt spindle in asecond direction opposite to said first direction.
 9. In a combinationlatch and dead bolt lock mechanism, a pair of mutually opposing,coaxially disposed knob spindles, one of which has a key-operatedcylinder lock which is relatively fixedly located therein, on therotational axis of the spindles, a manually operated bolt spindlemechanism which is independently rotatably mounted on the rotationalaxis of the spindles, means operatively interconnecting the individualknob spindles with the latch for reciprocation of the latch, and meansoperatively interconnecting the bolt spindle mechanism with the deadbolt for reciprocation of the dead bolt, the cylinder lock and the boltspindle mechanism having mutually opposing end openings therein forprojection of the leading end portion of the key of the cylinder lockinto the bolt spindle mechanism from the cylinder lock, and there beinglug means in the opening of the bolt spindle mechanism which areinterengageable with the key when the cylinder lock is unlocked by thekey, so that rotation of the key in the cylinder lock imparts torque tothe bolt spindle mechanism to operate the dead bolt.
 10. The combinationlatch and dead bolt lock mechanism according to claim 9 wherein theother knob spindle has an exteriorly accessible thumb turn which isindependently rotatably mounted therein, on the rotational axis of thespindles, and interconnected with the bolt spindle mechanism to manuallyoperate the same.
 11. The combination latch and dead bolt lock mechanismaccording to claim 9 wherein the bolt spindle mechanism includes asleeve adjacent the cylinder lock, which has lugs thereon that projectradially inwardly of the bore of the sleeve to engage abutments on thekey of the cylinder lock.
 12. The combination latch and dead bolt lockmechanism according to claim 11 wherein the bolt spindle mechanism alsoincludes a bolt spindle which is longitudinally coaxially disposed withthe sleeve, the bolt spindle and sleeve being relatively axiallyshiftable and yieldably biased to assume a normally operative positionalong the rotational axis of the knob spindles, and there being lugmeans on the bolt spindle and sleeve which interengage with one anotherin the normally operative position thereof, so that the bolt spindleundergoes rotation in conjunction with the sleeve when torque is appliedto the sleeve, but which disengage from one another when the boltspindle and sleeve are shifted in relation to one another against thebias thereon, relatively axially away from the normally operativeposition thereof, so that the torque applied to the sleeve is nottransmitted to the bolt spindle.
 13. The combination latch and dead boltlock mechanism according to claim 12 wherein the sleeve has a pickshield across the bore thereof, opposite the adjacent end of the boltspindle.
 14. The combination latch and dead bolt lock mechanismaccording to claim 9 wherein there is a pair of barrier elementsrelatively rotatably inserted into the opening of the bolt spindlemechanism, from the cylinder lock, to either side of the keyway of thecylinder lock, to prevent rotation of the bolt spindle mechanism byother than the key.
 15. The combination latch and dead bolt lockmechanism according to claim 9 wherein the latch and dead bolt arehoused in, and separately projectable from separate recesses spacedapart in the lock mechanism.
 16. The combination latch and dead boltlock mechanism according to claim 9 wherein the latch is spring loadedto project from the lock mechanism, and the means for reciprocating thelatch include a pivotally mounted lever which is operative to retractthe latch against the bias thereon, and a V-shaped latch connector, theapex of which is interconnected with the lever, and the legs of whichare interconnected with the knob spindles and individually responsive tolongitudinally applied end forces thereon to rotate the lever about thepivot thereof.
 17. The combination latch and dead bolt lock mechanismaccording to claim 16 wherein the knob spindles are rotatableindependently from one another, and each knob spindle is separatelyinterconnected with the V-shaped latch connector to apply longitudinalend forces to the same independently of the other knob spindle.
 18. In aknob spindle for a combination latch and dead bolt lock mechanism, apair of coaxially disposed and relatively axially shiftable operatingmembers for the dead bolt, which are independently rotatably mounted onthe rotational axis of the knob spindle and yieldably biased to assume anormally operative position along the axis thereof, there being lugmeans on the operating members which are interengaged with one anotherin the normally operative position thereof to cause the members toundergo conjoint rotation when torque is applied to one of the members,but disengaged from one another when the members are shifted in relationto one another against the bias thereon, relatively axially away fromthe normally operative position thereof, so that the torque applied tothe one operating member is not transmitted to the other operatingmember.
 19. The knob spindle according to claim 18 wherein the oneoperating member has a recess therein and a portion of the otheroperating member is inserted in the recess, the lug means beinginterposed between the operating members in the recess.
 20. The knobspindle according to claim 19 wherein the one operating member has lugsthereon which project radially inwardly of the recess and engageabutments on the other operating member.
 21. The knob spindle accordingto claim 20 wherein the one operating member takes the form of a sleeve,and the other operating member takes the form of a bolt spindle, one endportion of which is inserted in the bore of the sleeve.
 22. The knobspindle according to claim 21 wherein the sleeve has a pick shieldacross the bore thereof, opposite the one end of the bolt spindle. 23.The knob spindle according to claim 22 wherein the one end of the boltspindle has a flange thereon which in turn has axially extending fingersthereon which form abutments for the lugs on the sleeve.
 24. The knobspindle according to claim 23 wherein biasing means are interposedbetween the pick shield and the flange on the bolt spindle.
 25. The knobspindle according to claim 18 wherein there is a key-operated cylinderlock interposed in the spindle between the one operating member and thefree end of the knob, the cylinder lock and one opeRating member havingmutually opposing end openings therein for projection of the leading endportion of the key of the cylinder lock into the one operating memberfrom the cylinder lock, and there being lug means in the opening of theone operating member which are interengageable with the key when thecylinder lock is unlocked by the key, so that rotation of the key in thecylinder lock imparts torque to the one operating member, and thus tothe other operating member, for operation of the dead bolt.
 26. The knobspindle according to claim 25 wherein there is a pair of barrierelements rotatably inserted into the opening of the one operatingmember, from the cylinder lock, to either side of the keyway of thecylinder lock, to prevent rotation of the one operating member by otherthan the key.
 27. In combination, a lock mechanism having separatelyprojectable latch and dead bolt locks therein, and a knob spindleinterconnected with the lock mechanism to operate the locks, including apair of coaxially disposed and relatively axially shiftable operatingmembers for the dead bolt, which are independently rotatably mounted onthe rotational axis of the knob spindle and yieldably biased to assume anormally operative position along the axis thereof, there being lugmeans on the operating members which are interengaged with one anotherin the normally operative position thereof to cause the members toundergo conjoint rotation when torque is applied to one of the members,but disengaged from one another when the members are shifted in relationto one another against the bias thereon, relatively axially away fromthe normally operative position thereof, so that the torque applied tothe one operating member is not transmitted to the other operatingmember.